A federal appeals court just drew a hard line under one of the fastest-growing corners of the prediction-market business. The Ninth Circuit ruled that Kalshi’s sports event contracts are gambling, not financial “swaps,” which strips away the legal shield Kalshi has been using to operate in states that ban sports betting. According to Ars Technica, Judge Ryan Nelson wrote that “placing sports bets, even when called by another name, is still gambling,” quoting Romeo and Juliet’s line that “that which we call a rose by any other name would smell as sweet.”
What stands out here is how directly the court rejected the entire regulatory theory Kalshi and the CFTC have been leaning on.
What actually happened?
Kalshi lets people trade contracts tied to real-world outcomes, including who wins a game. The company has argued these are “swaps,” a type of financial derivative that falls under the Commodity Futures Trading Commission’s exclusive jurisdiction. That framing matters because if the contracts are swaps, federal law preempts state gambling rules. The CFTC has backed this view aggressively, even suing states that tried to regulate or ban prediction markets.
The Ninth Circuit didn’t buy it. The panel said the broadest reading of “swap” might technically cover these contracts, but that reading “conflicts with the larger statutory scheme and has no limiting principle.” In plain terms: if a bet on the Mets counts as a swap, almost anything does.
Why doesn’t a sports bet count as a swap?
The court’s reasoning came down to two words in the statute: “event” and “consequence.” A swap has to involve an event “associated with a potential financial, economic, or commercial consequence.”
Judge Kenneth Lee, in a concurring opinion, put it bluntly. “Few people would describe, say, the New York Mets’ latest loss of a game as an ‘event,'” he wrote. He allowed that a loss might, in an “uber-technical sense,” nudge the economy as some fans “guzzle more beer to drown away their sorrows,” but called it “fanciful” to treat one game in a 162-game season as carrying the kind of economic weight a real swap contract requires.
The court also leaned on Congress. Lawmakers have written plenty of gambling statutes, the ruling noted, and the Dodd-Frank Act, which gave the CFTC its authority over swaps, didn’t repeal or amend any of them. Nelson’s opinion was joined by Judge Bridget Bade.
Why this matters
Prediction markets have exploded, and sports contracts are a big reason. Kalshi and rivals have marketed event trading as a federally regulated financial product, which conveniently sidesteps the patchwork of state gambling laws and licensing regimes. This ruling attacks that premise at the root.
A few immediate takeaways:
- State bans are back in play. If these contracts are gambling, states like Nevada can enforce their own laws instead of being preempted by federal swap rules.
- The CFTC’s strategy takes a hit. The agency has been suing states on the theory that it owns this turf. A federal appeals court just said otherwise.
- Other prediction platforms are exposed. Any operator using the “it’s a swap” argument to run sports markets nationwide now faces the same legal problem.
What comes next?
Expect Kalshi to keep fighting. A circuit-level loss this significant is the kind of case that pushes toward an en banc rehearing or a Supreme Court petition, especially with the CFTC aligned on the same side. Other circuits may also weigh in, and a split between them would raise the odds the issue lands before the justices.
For the broader prediction-market industry, the message is sharper than any single ruling. The regulatory gray zone that let sports event trading scale so fast is narrowing, and “we’re a financial exchange, not a sportsbook” is a harder line to hold in court. Operators betting their business model on that distinction should be watching this docket closely.
More details are available in the original reporting at Ars Technica.